.hero-section{padding:6rem 2rem;text-align:center;background-color:var(--background-dark);box-shadow:var(--shadow-medium);border-radius:.5rem;border:1px solid var(--border-color)}.hero-section h1{font-size:3rem;font-weight:700;margin-bottom:1rem;line-height:1.2;color:var(--text-color-primary)}.hero-section p{font-size:1.125rem;color:var(--text-color-secondary);max-width:600px;margin:0 auto 2rem}.hero-buttons{display:flex;justify-content:center;gap:1rem}.button-secondary{background-color:transparent;border:1px solid var(--border-color);color:var(--text-color-primary)}.button-secondary:hover{background-color:var(--border-color);transform:translateY(-2px);box-shadow:var(--shadow-medium)}.tools-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem;margin-top:2rem}.tool-card{display:block;background-color:var(--background-dark);padding:1.5rem;border-radius:.5rem;border:1px solid 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h1{font-size:2rem}.hero-buttons{flex-direction:column;align-items:center}.button{width:100%;max-width:300px}}:root{--primary-color:#3B82F6;--accent-color:#EC4899;--secondary-color:#6B7280;--background-light:#F9FAFB;--background-dark:#FFF;--text-color-primary:#1F2937;--text-color-secondary:#4B5563;--border-color:#E5E7EB;--shadow-light:0 1px 3px 0 rgba(0,0,0,.1),0 1px 2px 0 rgba(0,0,0,.06);--shadow-medium:0 4px 6px -1px rgba(0,0,0,.1),0 2px 4px -1px rgba(0,0,0,.05)}body[data-theme="dark"]{--background-light:#0B1220;--background-dark:#1F2937;--text-color-primary:#E5E7EB;--text-color-secondary:#9CA3AF;--border-color:#374151;--shadow-light:0 1px 3px 0 rgba(255,255,255,.05),0 1px 2px 0 rgba(255,255,255,.03);--shadow-medium:0 4px 6px -1px rgba(255,255,255,.08),0 2px 4px -1px rgba(255,255,255,.05)}body{font-family:'Inter',sans-serif;margin:0;padding:0;background-color:var(--background-light);color:var(--text-color-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color 0.3s ease;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cg fill-opacity='0.05'%3E%3Ccircle fill='%239C9C9C' cx='25' cy='25' r='12.5'/%3E%3Cpath fill='%23707070' d='M50 0c-27.6 0-50 22.4-50 50s22.4 50 50 50 50-22.4 50-50-22.4-50-50-50zm0 90c-22.1 0-40-17.9-40-40s17.9-40 40-40 40 17.9 40 40-17.9 40-40 40z'/%3E%3C/g%3E%3C/svg%3E")}.container{max-width:1200px;margin:0 auto;padding:2rem;display:flex;flex-direction:column;gap:2rem}.header{position:sticky;top:0;z-index:99;background:linear-gradient(90deg,#3B82F6 0%,#6366F1 100%);box-shadow:0 6px 22px rgba(59,130,246,.16);padding:1.2rem 1.4rem;display:flex;align-items:center;justify-content:space-between}.logo{font-size:2rem;color:#fff;font-weight:900;letter-spacing:-2px;text-decoration:none;margin-right:1.4rem;text-shadow:0 2px 12px rgba(59,130,246,.16);transition:color 0.2s,text-shadow 0.2s;white-space:nowrap}.logo:hover{color:#EC4899}.menu-toggle{display:none;font-size:2rem;color:#EEF2FF;background:none;border:none;cursor:pointer;z-index:101;margin-right:.35rem;transition:color 0.18s;width:44px;height:44px;align-items:center;justify-content:center}.theme-toggle-btn{background:#6366F1;color:#fff;border:none;border-radius:50%;width:38px;height:38px;font-size:1.35rem;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 10px rgba(59,130,246,.12);transition:background 0.18s,color 0.18s,box-shadow 0.22s;cursor:pointer;margin-left:1rem}.theme-toggle-btn:hover,.theme-toggle-btn:focus{background:#6366F1;color:#EC4899;box-shadow:0 4px 14px rgba(59,130,246,.21);outline:2px solid #EC4899;outline-offset:2px}.nav{flex:1 1 auto;display:flex;justify-content:center;align-items:center}.nav ul{display:flex;gap:1.25rem;list-style:none;margin:0;padding:0;align-items:center}.nav ul li{position:relative}.nav a,.nav .dropbtn{color:#E0E7FF;background:none;border:none;border-radius:0.8em!important;font-weight:600;font-size:1.09rem;text-decoration:none;padding:.34rem .46rem;border-bottom:2px solid transparent;cursor:pointer;transition:color 0.18s,border-bottom 0.18s,background 0.15s;outline:none;display:inline-block}.nav a:hover,.nav .dropbtn:hover,.nav a:focus,.nav .dropbtn:focus{color:#fff;border-bottom:2px solid #EC4899;background:rgba(236,72,153,.08)}.dropdown .dropbtn{padding-right:2rem}.dropdown .dropdown-content{display:none;position:absolute;left:0;top:100%;background:linear-gradient(90deg,#6366F1 0%,#3B82F6 100%);min-width:190px;border-radius:0 0 1rem 1rem;box-shadow:0 6px 22px rgba(59,130,246,.17);z-index:1001;padding:.4rem 0;animation:fadeIn 0.18s}@keyframes 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rgba(59,130,246,.16);z-index:97}.menu-toggle{grid-column:1;grid-row:1;display:flex!important;align-items:center!important;justify-content:center!important;width:44px!important;height:44px!important;font-size:1.4rem!important;margin:0!important;background:none!important;border:none!important;color:#EEF2FF!important;cursor:pointer!important;box-sizing:border-box!important}.logo{grid-column:2;grid-row:1;text-align:center;font-size:1.2rem;color:#fff;font-weight:900;letter-spacing:-1.2px;text-shadow:0 2px 10px rgba(59,130,246,.14);margin:0;padding:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;justify-self:center;align-self:center}.theme-toggle-btn{grid-column:3;grid-row:1;width:44px!important;height:44px!important;font-size:1.1rem!important;background:#6366F1!important;color:#fff!important;border:none!important;border-radius:50%!important;box-shadow:0 2px 10px 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.dropbtn{width:100%!important;max-width:220px!important;min-width:100px!important;text-align:left!important;font-size:1rem!important;display:block!important;margin:0!important;box-sizing:border-box!important;padding:.6rem .18rem .6rem 0.16rem!important;border:none!important;background:none!important;color:#E0E7FF!important;font-weight:600!important;border-bottom:2px solid transparent!important}.nav ul li a:hover,.nav ul li .dropbtn:hover,.nav ul li a:focus,.nav ul li .dropbtn:focus{color:#fff!important;border-bottom:2px solid #EC4899!important;background:rgba(236,72,153,.08)!important}.dropdown .dropbtn{padding-right:1.7em!important}.dropdown .dropdown-content{display:none!important;position:static!important;min-width:100%!important;border-radius:0!important;box-shadow:none!important;background:none!important;padding-left:0.6rem!important;padding-top:0.18rem!important;animation:none!important}.dropdown.open .dropdown-content{display:block!important}.dropdown-content a{padding:.7rem .18rem .7rem 1.1rem!important;width:100%!important;box-sizing:border-box!important}}.section{background-color:var(--background-dark);border-radius:.5rem;padding:2rem;box-shadow:var(--shadow-medium);border:1px solid var(--border-color);margin-top:2rem;text-align:center}.ads-container{text-align:center;margin:2rem 0}.ads-container div{background-color:var(--border-color);border:2px dashed var(--secondary-color);padding:2rem;color:var(--text-color-secondary);font-style:italic;border-radius:.5rem}h1{font-size:2.25rem;margin-top:0;margin-bottom:1.5rem;font-weight:600;text-align:center}p.lead{color:var(--text-color-secondary);margin:-.75rem 0 1.5rem;text-align:center}h2{font-size:1.75rem;margin-top:0;margin-bottom:1.5rem;font-weight:600}select{background-color:var(--background-dark);color:var(--text-color-primary);border:1px solid var(--border-color);padding:.75rem 1rem;border-radius:.375rem;font-weight:600;cursor:pointer;transition:background-color 0.2s ease,box-shadow 0.2s ease;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url('data:image/svg+xml;charset=UTF-8,%3Csvg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%236B7280"%3E%3Cpath d="M7 10l5 5 5-5H7z"/%3E%3C/svg%3E');background-repeat:no-repeat;background-position:right .75rem center;background-size:1.5em;padding-right:2.5rem}button{display:inline-block;background-color:var(--primary-color);color:#fff;padding:.75rem 1.5rem;border-radius:.375rem;text-decoration:none;font-weight:600;border:none;cursor:pointer;transition:transform 0.2s ease,box-shadow 0.2s ease}button:hover{background-color:#2563EB;transform:translateY(-2px);box-shadow:var(--shadow-medium)}#startBtn{width:auto}.color-box{width:180px;height:180px;margin:20px auto;border-radius:8px;border:1px solid var(--border-color);box-shadow:var(--shadow-medium);transition:background .18s}.options{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:20px}.options button{flex:1 1 calc(50% - 12px);padding:12px;border:none;border-radius:8px;background:var(--background-dark);color:var(--text-color-primary);border:1px solid var(--border-color);font-size:14px;cursor:pointer}.options button:hover{background-color:var(--border-color);box-shadow:none}.correct-feedback{background-color:#1ABC9C!important;transition:background-color 0.3s ease}.wrong-feedback{background-color:#E74C3C!important;transition:background-color 0.3s ease}.result{margin-top:20px;font-weight:700;min-height:1.2em}.correct{color:#1ABC9C}.wrong{color:#E74C3C}.score{margin-top:18px;color:var(--text-color-secondary)}.timer{margin-top:10px;font-weight:700;color:var(--primary-color)}.share{margin-top:20px}.share button{background:var(--accent-color);color:#fff;border:none;padding:8px 12px;border-radius:6px;cursor:pointer}.share button:hover{background:#DC267D;transform:translateY(-2px);box-shadow:var(--shadow-medium)}section{margin-top:30px;text-align:left}h2{font-size:1.2rem;margin-bottom:10px}details{margin-bottom:8px}.modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:rgba(0,0,0,.7);display:flex;justify-content:center;align-items:center;opacity:0;visibility:hidden;transition:opacity 0.3s ease,visibility 0.3s ease;z-index:1000}.modal.is-visible{opacity:1;visibility:visible}.modal-content{background-color:var(--background-dark);color:var(--text-color-primary);padding:2rem;border-radius:.5rem;box-shadow:var(--shadow-medium);text-align:center;max-width:400px;width:90%;transform:translateY(-20px);transition:transform 0.3s ease}.modal.is-visible .modal-content{transform:translateY(0)}.modal-content h3{font-size:2rem;margin-top:0}.modal-content p{font-size:1.2rem;color:var(--text-color-secondary)}.modal-buttons{display:flex;justify-content:center;gap:1rem;margin-top:1.5rem}.close-modal-btn{position:absolute;top:10px;right:15px;font-size:28px;font-weight:700;color:var(--text-color-secondary);cursor:pointer;transition:color 0.2s ease}.close-modal-btn:hover{color:var(--accent-color)}.toast{visibility:hidden;min-width:250px;margin-left:-125px;background-color:#333;color:#fff;text-align:center;border-radius:2px;padding:16px;position:fixed;z-index:1;left:50%;bottom:30px}.toast.show{visibility:visible;-webkit-animation:fadein 0.5s,fadeout 0.5s 1.4s;animation:fadein 0.5s,fadeout 0.5s 1.4s}@-webkit-keyframes fadein{from{bottom:0;opacity:0}to{bottom:30px;opacity:1}}@keyframes fadein{from{bottom:0;opacity:0}to{bottom:30px;opacity:1}}@-webkit-keyframes fadeout{from{bottom:30px;opacity:1}to{bottom:0;opacity:0}}@keyframes fadeout{from{bottom:30px;opacity:1}to{bottom:0;opacity:0}}@media (max-width:768px){.container{padding:1rem}.header{flex-direction:column;gap:1rem;padding:1rem}.header nav a{margin:.5rem .75rem}.section{padding:1.5rem}h1{font-size:1.75rem}}.control-group{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:1.5rem;margin-bottom:2rem;margin-top:1rem}.control-group select{width:auto;min-width:120px}.control-group button{flex-shrink:0}.footer{text-align:left;padding:3rem 2rem;color:#4B5563;background:linear-gradient(90deg,#f9fafb 0%,#e0e7ff 100%);margin-top:2rem;border-top:2px solid #6B7280;box-shadow:0 -3px 12px rgba(59,130,246,.06);font-size:1rem}.footer a{color:#2563EB}.footer a:hover{color:#EC4899}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem;max-width:1200px;margin:0 auto}.footer-column h4{font-size:1.1rem;color:var(--text-color-primary);margin-bottom:1rem}.footer-column ul{list-style:none;padding:0;margin:0}.footer-column ul li{margin-bottom:.5rem}.footer-column ul li a{color:var(--text-color-secondary);text-decoration:none;transition:color 0.2s ease}.footer-column ul li a:hover{color:var(--primary-color)}.footer-social-icons a{color:var(--text-color-secondary);margin-right:1rem;font-size:1.2rem;transition:color 0.2s ease}.footer-social-icons a:hover{color:var(--accent-color)}.footer-subscribe-form{display:flex;margin-top:1rem}.footer-subscribe-form input{flex-grow:1;padding:.5rem;border:1px solid var(--border-color);border-radius:.25rem 0 0 .25rem;background-color:var(--background-light);color:var(--text-color-primary)}.footer-subscribe-form button{padding:.5rem 1rem;border:none;background-color:var(--primary-color);color:#fff;cursor:pointer;border-radius:0 .25rem .25rem 0}.footer-bottom{text-align:center;margin-top:2rem;padding-top:1rem;border-top:1px solid var(--border-color)}@media (max-width:768px){.footer{text-align:center}.footer-grid{grid-template-columns:1fr}.footer-column:not(:first-child){margin-top:2rem}.footer-subscribe-form{justify-content:center}}.welcome-message{text-align:center;font-weight:500;color:var(--text-color-primary);margin-top:-1rem;margin-bottom:2rem}.back-to-top{display:none;opacity:0;position:fixed;bottom:20px;right:20px;background:linear-gradient(90deg,#3a86ff,#35dab9 70%);color:#fff;border:none;font-weight:700;font-size:1rem;width:50px;height:50px;border-radius:50%;text-align:center;line-height:50px;font-size:24px;box-shadow:0 1px 8px #0001;margin-bottom:.8em;margin-top:.5em;transition:filter .15s,box-shadow .15s;opacity:0;z-index:999;padding:.1em .1em;border-radius:25px;margin:auto;display:block}.back-to-top:hover{background-color:#2563eb;transform:translateY(-5px);filter:brightness(1.08);box-shadow:0 0 0 9px #3a86ff33}.back-to-top.show{opacity:1;display:block}.controls{display:grid;justify-content:center;align-items:center;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1.5rem;margin-top:1.5rem}.button-group{display:flex;gap:.75rem;flex-wrap:wrap}.button-primary{display:inline-block;background-color:var(--primary-color);color:#fff;padding:.75rem 1.5rem;border-radius:.375rem;text-decoration:none;font-weight:600;border:none;cursor:pointer;transition:background-color 0.2s ease,box-shadow 0.2s ease}.button-primary:hover{background-color:#2563EB;box-shadow:var(--shadow-light)}.button-secondary{background-color:var(--background-dark);color:var(--text-color-primary);border:1px solid var(--border-color);padding:.75rem 1.5rem;border-radius:.375rem;font-weight:600;cursor:pointer;transition:background-color 0.2s ease,box-shadow 0.2s ease}.button-secondary:hover{background-color:var(--background-light);box-shadow:var(--shadow-light)}.export-buttons{display:flex;justify-content:center;flex-wrap:wrap;gap:1rem;margin-top:2rem}.form-group{display:flex;margin-bottom:1.5rem;flex-direction:column;gap:.5rem}.form-group label{display:block;font-weight:600;margin-bottom:.5rem;color:var(--text-color-secondary)}.form-group .radio-group{display:flex;flex-wrap:wrap;gap:1rem}.radio-option{background-color:var(--background-light);color:var(--text-color-primary);padding:.75rem 1.25rem;border-radius:.375rem;border:1px solid var(--border-color);cursor:pointer;transition:background-color 0.2s ease,border-color 0.2s ease,color 0.2s ease;display:inline-block}.radio-option:hover{background-color:var(--border-color)}.radio-option.selected-option{background-color:var(--primary-color);border-color:var(--primary-color);color:#fff}#convertir .controls{display:flex;justify-content:center;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:1.5rem}.colorPicker{display:flex;flex-direction:column;align-items:center;gap:.5rem}select,input[type=number]{width:100%;padding:.75rem 1rem;border:1px solid var(--border-color);border-radius:.375rem;font-size:1rem;color:var(--text-color-primary);background-color:var(--background-dark);transition:border-color 0.2s ease,box-shadow 0.2s ease}select:focus,input[type=number]:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(59,130,246,.2)}input[type=number]{width:64px}input[type=text]{width:280px;padding:.75rem 1rem;border-radius:.375rem;border:1px solid var(--border-color);margin:0;font-size:1rem;color:var(--text-color-primary);background-color:var(--background-dark);transition:border-color 0.2s ease,box-shadow 0.2s ease}input[type=text]:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(59,130,246,.2)}input[type="color"]{-webkit-appearance:none;appearance:none;width:48px;height:48px;padding:0;border-radius:.375rem;border:none;cursor:pointer;margin:0;background:transparent;outline:none}input[type=color]::-webkit-color-swatch-wrapper{padding:0;border-radius:.375rem}input[type=color]::-webkit-color-swatch{border:none;border-radius:.25rem}input[type=color]::-moz-color-swatch{border:none;border-radius:.25rem}input[type="file"],select,button.action{padding:.75rem 1.5rem;border-radius:.375rem;border:1px solid var(--border-color);cursor:pointer;margin:6px;background-color:var(--background-dark);color:var(--text-color-primary);font-weight:500;font-size:1rem;transition:border-color 0.2s ease,box-shadow 0.2s ease}input[type="file"]:focus,select:focus,button.action:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px rgba(59,130,246,.2)}input[type="file"]{max-width:250px}.color-share-wrap{display:flex;gap:1em;justify-content:center;margin-bottom:1.3em}.share-btn{background:#f6fafd;color:#222;border:none;border-radius:8px;padding:.5em 1.1em;font-weight:700;font-size:1em;cursor:pointer;transition:filter .13s;box-shadow:0 2px 8px #3180e418}.share-btn.twitter{color:#4884f7}.share-btn.facebook{color:#3578e5}.share-btn.whatsapp{color:#23bc54}.share-btn.download{color:#193458}.share-btn:hover{filter:brightness(1.13)}#gradientPreview{height:50px;border-radius:.375rem;margin-top:1.5rem;display:none;border:1px solid var(--border-color)}#palette{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-top:1.5rem}.card{padding:2rem 1.6rem!important;background-color:var(--background-dark);border:1px solid var(--border-color);border-radius:.5rem;overflow:hidden;box-shadow:var(--shadow-light)}.swatch{height:88px;cursor:pointer;transition:transform 0.2s 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